Fluid press motor and control valve therefor



FLUID rnnss Mo'ron AND coNTnoLvvALqvE` 'rHERFFoRv Filed July 25, 1944 C.EISEN sept. 21, 1948.

2 Shee-ts-Sheet 1 NVENTR. [Afl f/.Sf/V.

Sept. 21, 1948. c. EISEN l FLUID PRESS MOTOR AND CONTROL VALVE THEREFORFiled July 25, 1944 2 Sheets-Sheet 2 INVENTOR. CHR/ EISEN.

HTTOENEK Patented Sept. 21, 1948 UNITED STATES PATENT OFFICE FLUID PRESSMOTOR AND CTONTROL VALVE THEREFOR y Carl Eisen, Bronx, N. Y. ApplicationJuly 25, 1944Serial No. 546,556

This invention relates to new and useful improvements in machines, suchas powder presses, utilizedin connection with powdered materials, such'as face powder, or the like.

Heretofore, it has been diiiicult to compress .powder into cake formwithout scattering some of the powder at the time of the impact of thedie with said powder.

It is thus one purpose o-f this invention to remedy this fault, and atthe same time speed up the production of caking powder, and moreespecially face powder, into compacts.

It is a further object in this connection to provide amachine whichissimple in operation and economical of construction.

It is a still further object of this invention in caking facial powderto, first, bring down the compressor head of the machine vslowly uponthe surface of the p owder, and, then, after contact has been made,suddenly exerting an additional .fpressure upon said compressor head,winch makes it possible to cake the powder without any spill.

It is another object-of the invention to provide a machine, as setforth, with means whereby said machine can be operated by two persons,one on each side ofthe machine, thus further speeding up the production.

In `the drawings, wherein similar reference characters indicatecorresponding parts:

Figure 1 is a front elevation, with parts broken off, showing a powdervcompression devi-ce, vcon-4 structed in conformity with my invention.

- Figure 2 is a top plan view of Figure 1.

Figure 3 is a right hand end View of the invention, as shown in Figurel, with parts broken oil.

Figure 4 is an enlarged sectional View of the air pressure and releasecontrol valve.

Figure 5 is, an enlarged sectional view of the eccentric valve controlhandle.

Figure 6 is a top plan view of a modified form of the compact carrier.

Referring more particularly to the drawings, the machine I0 consists ofthetable II having the legs I2; two steel plates I3 and I4 are spacedlysecured to the table II, and are separated by the `bolts I5. Aconventional pressure cylinder I6 is secured to the upper plate I4; thecylinder I6 is provided with the upper and lower heads I1 and I8attached in their respective .positions by means of bolts I9. A plungerextends from the cylinder I-B, which has the conventional-'piston andspring (not shown). p

The end of theplunger `2t) is provided with a die-head 2l.

1 Claim. (Cl. 121-38) carrier 22 for holding the compacts C (Figures 1and 3) is mounted on the plate I3, said carrier consisting of the lowerplate 23, two guide rails 24 and a sliding member 25.

The sliding member 25 has secured thereto two compact holders 26. Themember 25 is pushed back and forth by means of handles 21 and 28.

As it is essential to accurately control the extreme positions of themember 25 inl order to assure alignment with the die-'head 2I, adjustingmeans 30 are provided for at the two extreme ends 3| of the carrier 22.The adjusting means 30 consists of rplates 32, each of which is securedby bolts 33 to the lower plate 23; a threaded bolt 34 is insertedthrough the :plates 32 and can be adjusted, thus accurately stopping theextreme movement of the member 25. The carrier 22 is secured to theplate I3 by means of two rail members 35,which are attached to saidplate I3 by means of a plurality of vertical screws, or bolts 36.

The horizontal screws or bolts 31 are provided to adjustably secure theguide rails 24 of the carrier 22 Yin proper alignment with the diehead2l.

The operating mechanism is preferably protected from contact with theoperators hands by two shields 40, which have the windows 4I and thecut-out 42 for the passage of the slide carrier 22. Three pipe lines 43,44 and 45 are secured to the cylinder head I1. Pipe line 44 leads fromthe cylinder head I1 and is provided with a shut-oif valve 41, and isalso connected to the pipe 48 leading to the cylinder headl I1, as shownat 49. The, free end of the pipe line 48 is provided with a pressuregage 50, while the opposite end terminates in the exhaust pipe line 45.These pipe lines pass downward through the table Il and connect with anair pressureand release control valvev5I. The latter consists of asleeve 52 having therein port openings 53, 54, 55 and 56. rIihe upperend of the sleeve 52 is provided with a needle valve seat 51, whichterminates in the opening 58, the L 59and the pipe line 60. A piston ,6Iy is slidably mounted within the sleeve 52, having at its upper end theneedle valve 62 in engagement with the needle lvalve seat 51; aconventional'gasket 63 is provided to secure a tight t. The lower end ofthe piston 6I is provided with an opening 64 through which passes thelongitudinal or horizontal rod 55, fulcrumed at 66 by means of a bracket61 secured tol one of the table legs I2.

The opposite end of the horizontal arm 65 is connected to the table IIby means of a spring nects with the needle valve 46, as previouslydedownwardinto its rst posi scribed, thus causing a slow ow of air froml,

the pipe line B9 which in turn will result kinra slow downward movementof the piston"ro'd"2. The movement of the eccentric handle to this rstposition is controlled by means of a ball "I4 within the housing 'i5 andheld in extended position by means of a spring 1t, thisfball fie willsnap into the hollow space 11 of the handle 69. A.further movemen'tinthedirection of the yarrow 120i .thehandle'b'gwill'bring lthe piston Ell.down Vbelow the opening of thepipe "de, .and will, since the valve Elcompletely open, permit an .instantaneous rush of .air .from .the .airline 6D into .the vcylinder it (by-.passing the needle valVeY46).,-thus,giving the .piston roda sudden impact equal to the amount of pressureinlthe air line lill. Upon returning the handle 69 to its shutposition,shown in Figure 3, the piston GI will `-again move upwardfto a positionshown in vFigure 4, .thus permitting Vthe compressed .air inthe cylinderI6 to escape through'the exhaust pipe line 45 by passing along thegroove Gla of the piston 'El yinto the A,exl'iaustline lia. The pressurein .the cylinder le having thus "been released, a spring .pressing.against the .piston head within the vcylinder l(not shown) .will ,forcethe piston rod ,20 vinto its upper position, thus releasing the'compactC, permitting the member 25 to bemoved into .its otherextreme position,and thus placing .the next .compact with (loose powder into a positionready .for the compression. Pins 78 onthe eccentrichandle control thetwo extreme movements o'i the said handle.

In themodication shown inFigure 6, vthe slide carrier flil) .consists ofthe lower member'Lslide rails 8:2, .slide .members WithcOmpaCthOIdersSe. The. slide .member slides v.between .the .rollers 8.5 .which latterare vsecured tothe side rails 82 byfmeans .of-pins8. A suicientnumberoirollers '.85 are provided .on-each side to-assure a contact4 of at least,three .rollers with ,each vedge 81 of the .slide member B3. To obtainthe -extended positions cf the slide member'i within the slide ,80, saidslide member .83 4,is v,provided with bevelled corners `38 and ,89,asillustrated in Figure v6 thebevelledsur'face of the slide member33,.isin contact with the bevelled surface e9| of `.a latch member .953..The latch :9| slidably moves within the housing `92 yandis .held inextended position yby the springy 9'3. kA pin .94 within the slot .9.5controls themovement of thelatch memberSl. Whenthe slide member 83 ispushed towards the other end of the slide .the lbevelled surface Yt!!will cause the-latch ,Si tomove inward in the housing ,92, thuspermitting va `free movement of the slide member .83 intoits rextreme.opposite position. As soon-as ,the said oppositepositionhas beenapproximately reached, the .bevellededge 95 of .the .latch .member .97!4`willengage the bevelled .surface onaccount ofthe pressure of thespring 93. vIf the slidemember 83 should not have been moved into its'extremeposition by the 'operator .the pressure 'of the bevelled edge 95against the bevelled surface 83 will cause the slide member 83 to reachits maximum position controlled by the screw 34 of the adjustable stopmember 3l).

The operation of the device is as follows:

The operators having placed two compacts C with the proper amount ofloose powder therein, in the holders 25 of the slide member 25, thehandle G9 is now turned by .the operators in the direction ofthe arrow'l2 (Figure .3) into Vits first position, controlled by the ball memberi4, as pre- 'viously described. Air from the air line BD will now enterthrough the opened needle valve 62 into tloeprelim-inary air line 43which connects with aneedle valve 46 adjusted for a slow flow of air yslowly movedoWnWard against the compact C,

giving the loose powder an initial straightening out contact. Upon saidcontact of the die-head 2| with the surface of the powdenthe handle 69isfurthermoved in the direction ,of the .arrow iZJinto `its vextremeopposite position, ,thus causing the piston 6 lby means of the push rod'latomove into its lowermost .position and thereby .opening the airlinelM. The ffull pressure o'f..air.`irom the pipe line El) now'by-,passing the .pipeline 43 withthe needle valve 4t, will rush.throughpipe line 54. The fullpressure of air nowfbeing suddenly exertedwithin the cylinder H5, -w'ill .cause the'piston (not shown) to exertasu'dden. impact pressure of 'the diehead 2l upon "the vsurface of the`powder within the `compact C., .compressing -said V,powder into thedesired .'.caked "for-m. The handle 69 is nowreturne'dfintojfthe,position illustrated in Figure 3, thuscaus'ing'thepistonl to returninto the closed position .of .the needlevalve '62, as shown in`Figure 2i. The .compressed air from'the cylinderi6 is now escapingthroug'h the exhaust pipe 345 ypassingvaroun'dgthegroove Sla `of the Vpiston 6l .into the `exhaust line 45a.This `exhaust line 45a .preferably leails outjinto the open and away'from any disturbing effect it may have `upon .any .loose powder.

While the above description Arefers .to alirpressure throughout, it isunderstood Ltha't ,other @means maybepsubstituted, .such as ,.oiL etc.,'in which case, of course, COnVentiOnaLchangeswill have to be made inthe apparatus,.as shown.

'It is also understood .that the die'headf2fl.and the compact carriers2.6v .and '8'4 are'intenchangeable' to accommodate .a ,plurality of...sizes of 'compacts.

It is still ."further .understood l'that while ...only one cylinder "IS.has vbeen..showin-[ln this ,embodiment .of the invention, .that lit is.possible to mount .more than .one .cylinder controlled by the sameoperating means, .the numberofsuch cylinders being only [limitedbytheicapaciity vof the operators operating, such machines.

It lis .obvious that lchanges .may be .made .in :the form, constructionand arrangement/...oi .theseveral parts, asshown, within the scope.ofthe. appended claim, without 4departing ,from i the v.spirit o'f.theinventiom.andI.do.not, therefore, Wish to limit .myself to .the.exact constrifiction land arrangement .shown and .described 4herein.

What lI :claimas new, andidesi-re tofsecurefoy Letters Patent of .theUnitedStates, is:

-A -uid press :sy-stem, .including fa main =ex pansible .cylinder meansv-for converting ifluid pressure =into mechanical pressure, a unitarysource of fluid pressure, and acontrolyalvesystem forsecuring two ratesof expansion of said cylinder means, said valve system 'including .a

5 single secondary expansible transfer chamber, mechanical means foraltering the effective longitudinal dimension thereof, Valve means foradmitting fluid from said unitary source to one end of said chamber, aplurality of cylinder feed pipes opening into said chamber sequentiallyand additively, las said chamber is expanded, the pipe first openingthereinto having a constricted portion, whereby fluid flow therethroughtosaid lcylinder means takes place at a relatively reduced rate, therebyproducing a relatively reduced rate of expansion of said cylinder means,land at least one other pipe opening later, but While said first pipe isstill opened, into said chamber aiording substantially unrestrictedfluid 110W to said icylinder means, means for determining the degree ofexpansion of said transfer chamber, and an exhaust pipe for exhaustingfluid from said cylinder means, leading to said Valve, said Valve systemalso including means for porting said exhaust pipe to the atmosphere andmeansA for operating said porting means simultaneous'ly With thereduction of the longitudinal dimension of said tnansfer chamber to aminimum.

CARL EISEN.

REFERENCES CITED The following references are of record in the' file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,244,096 Kendall Oct. 23, 19171,399,169 Trace Dec. 6, 1921 1,428,688 Fritts Sept. 12, 1922 1,445,127Bucksman Feb. 13, 1923 1,641,131 Baker Aug. 30, 1927 1,655,815 JohansonJan. 10, 1928 1,799,366 Heinkel Apr. 7, 1931 1,805,056 Taylor May 12,1931 .1,877,102 Whitesell Sept. 13, 1932 1,904,112 Aschard Apr. 18, 19331,920,596 Schafer Aug. 1, 1933 2,067,492 Kingsbury Jan. 12, 19372,098,425 Landenberger Nov. 9, 1937 2,138,047 Turner Nov. 29, 19382,259,576 MacMillin Oct. 21, 1941 2,270,767 Platz Jan. 20, 19422,351,058 Marks June 13, 1944

